Much of over clocking these days is about one side of the processor. Adjusting the Front Side Bus speed. The negatives of over clocking are increased heat, a strain on memory (RAM) and a strain on other components.
Is it worth a few percentage points or frame rates? I think you have to realize that for most games over clocking the CPU does very little to improve performance. Its about the graphics and what graphic card you have. This is where you want to focus your money. Also, make sure your power supply can handle future card upgrades. 700 watts PSU is good so you have headroom for later upgrades. Don't under buy a card if you have a big monitor because more pixels means more graphic power. Motherboards that over clock are great and make it easier but you still must watch for heat issues. This goes for GPU overclocking and CPU over clocking. A unstable over clock will only provide grief and reduce life of component and that may be not a good thing.
I am about to build my second PC
I am tossing up between getting a i5 4670 or a i5 4670K
The GPU i have chosen is the GTX 780
Is overclocking really worth the money you pay for gaming performance?
If I do get the 4670K I will have to buy a overclock-able motherboard and a good CPU cooler. Note: 700W PSU
GA-H87N to GA-Z87N + $25
i5 4670 to i5 4670K + 30
Thermal take contac 21 to corsair H80i + $95
So it will cost me around $150 Australian dollars = $137 US dollars
Is it worth spending that much to get more gaming performance?
Will the 4670 bottle neck the GTX 780?